The pair, who met on season 16 of the ABC reality dating series, has not elaborated on the reason for their split. Flajnik and Robertson maintained a long-distance relationship and often posted photos of their activities on their Twitter accounts.

Robertson, a 29-year-old model, infamously invited Flajnik skinny-dipping on one of the first episodes of the season. She also butted heads with most of the other contestant. She also nicknamed her final competitors Lindzi Cox and Nicki Sterling "Horsey" and "Fatty," respectively.

The couple previously spent some time apart between the proposal and the airing of "After the Final Rose." Flajnik cited his fiance's behavior during the season as the reason for his apprehension.

"It's been a rough ride," Flajnik told host Chris Harrison at the time. "The woman that I saw on TV isn't the Courtney that I know... Those are the moments and the instances that led to Courtney and I not talking for a time while the show aired. We were essentially broken up."